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Surging-proof method for electronic jacquard machine

An electronic jacquard, anti-surge technology, used in jacquard machines, emergency protection circuit devices for limiting overcurrent/overvoltage, electrical components, etc., to avoid surge current and surge voltage.

Active Publication Date: 2011-06-08
WUJIANG WANGONG ELECTROMECHANICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But automatic queuing is an intelligent action, which must be realized by intelligent components

Method used

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  • Surging-proof method for electronic jacquard machine
  • Surging-proof method for electronic jacquard machine
  • Surging-proof method for electronic jacquard machine

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Such as figure 1 The anti-surge method used on the electronic jacquard machine shown above, for the electronic jacquard machine with 5120 needles, there are correspondingly 5120 electromagnets, each electromagnet has an electromagnetic needle selector coil, controlled by the electronic jacquard machine control system Under the circumstances, multiple electromagnets need to be powered on or off at the same time to carry out the corresponding jacquard work. In order to avoid the generation of surge current and surge voltage, every 128 electromagnetic needle selector coils can be divided into one electromagnetic needle selector coil Each group is a branch, so there are 40 branches in the whole machine. A delay unit is connected in series on each electromagnetic needle selector coil group branch. When a control signal arrives, all electromagnetic needle selector coils need to be When the power is turned on, the coil on the coil group 1 of the electromagnetic needle selecto...

Embodiment 2

[0033] image 3 and Figure 4The difference between the anti-surge method on the electronic jacquard machine shown in Embodiment 1 is that in this embodiment, multiple delay units are triggered in parallel under the control of the same control signal. That is, a delay unit is connected to the branch where the coil group of each electromagnetic needle selector is located. The delay increment of each delay unit is different and increases sequentially, thus forming a delay sequence and sequentially driving the load. . The difficulty of this embodiment lies in how to implement different and sequentially increasing delay units. This is actually an intelligent operation: each delay unit needs to know exactly where it is and how much delay time it needs to set. This is very easy to realize for the electronic jacquard machine with microprocessor control system, the Chinese invention patent application number that the applicant disclosed earlier is 200710022568.3, and the title of i...

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Abstract

The invention relates to a method for preventing a surge used for an electronic jacquard machine. The electronic jacquard machine consists of a control system and a plurality of electromagnetic needle-selector drive plates controlled by the control system. Each electromagnetic needle-selector drive plate drives a plurality of electromagnetic needle-selector coils. A time-delay unit is connected with the branch circuit, which is connected with the electromagnetic needle-selector drive plate, in sequence, each branch circuit has a different delay time and the delay time of a plurality of branchcircuits forms a time-delay sequence. When the control system needs the electromagnetic needle-selector coil to be electrified, the electromagnetic needle-selector coils connected with the branch circuits are electrified in sequence under the control of the time-delay unit. When the control system needs the electromagnetic needle-selector coil to be powered-down, the electromagnetic needle-selector coils connected with the branch circuits are powered-down in sequence under the control of the time-delay unit. The method can effectively reduce the surge current and surge voltage due to the factthat the loads are electrified or powered-down at the same time.

Description

technical field [0001] The invention relates to an electronic jacquard machine, in particular to an anti-surge method for the electronic jacquard machine. Background technique [0002] Surge current and surge voltage refer to the peak current and voltage formed in the power supply equipment, power bus, load, etc. at the moment when the power supply is turned on or off. Usually, di / dt is used to represent the surge current, and du / dt is used to represent the surge current. surge voltage. Inrush current can also be expressed as a current increment in the differential time interval, and inrush voltage as a voltage increment in the differential time interval. Di / dt is approximately expressed as Δi / Δt, which represents the current increment in a small time interval; du / dt is approximately represented as Δu / Δt, which represents the voltage increment in a small time interval. In electronic or electrical control systems, large surge currents or surge voltages are harmful, so peopl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D03C3/20H02H9/04
Inventor 李锡放
Owner WUJIANG WANGONG ELECTROMECHANICAL EQUIP
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